- New homes are now constructed
with a radon mitigation pipe that needs to be completely sealed and
is used for radon testing and can be used to vent radon gas safely
away from the home
- For this reason, codes require
the floors on ground to be sealed to prevent the entrance of soil
gases. This can be done in various ways including sealed vapour
barrier membranes, other impermeable membranes, or by applying a
layer of closed cell spray-in-place foam.